<html>

<head>
  <title>浮动框架</title>
</head>

<body bgcolor="#E1FFE1">
  <center>
    <iframe src="html_img.html" name="aa" width="600" height="400" marginwidth="30" 
    marginheight="20" align="middle" allowtransparency="true"> 这是一个浮动窗口</iframe>
    <p><a href="html_a_a.html" target="aa">超链接</a></p>
    <p><a href="html_hn.html" target="aa">标题</a></p>
    <p><a href="html_marquee.html" target="aa">滚动</a></p>
  </center>
</body>

</html>